legislation_cosponsors: 111-hres-385, C001063

Cosponsors for tracked legislation. Distinguishes original cosponsors (signed on at introduction) from later additions. Linked to congress_members via bioguide_id.

This data as json

bill_id	bioguide_id	full_name	party	state	sponsorship_date	is_original_cosponsor
111-hres-385	C001063	Rep. Cuellar, Henry [D-TX-28]	D	TX	2009-04-30	1